1. Melt butter and mix with the peanut butter, sugar, and crushed graham crackers.,2. Spread mixture into a 13x9 pan.,3. Melt chocolate chips and spread on top.,4. Refrigerate for exactly 1/2 hour and cut into small-sized bars (they are rich). The chocolate will still be a little soft, but it makes it easier to cut. It'll harden up with a little more time in the fridge.,______